package com.huilian.tool.common.utils;

import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.ParseException;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicHeader;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import org.springframework.stereotype.Service;

import java.io.IOException;


/**
 * @author: 少凡
 * @Date 2018/5/19 20:21
 */
@Service
@Slf4j
public class HttpServiceUtil {


    public static String httpGet(String url) {
        HttpGet httpGet = new HttpGet(url);
        return call(httpGet);
    }

    public static String httpPost(String url, String body) {
        HttpPost httpPost = new HttpPost(url);
        StringEntity postEntity = new StringEntity(body, "UTF-8");
        //设设置请求头
        httpPost.addHeader("Content-Type", "text/xml");
        httpPost.setEntity(postEntity);
        return call(httpPost);
    }

    private static String call(HttpRequestBase request) {
        CloseableHttpClient client = HttpClients.createDefault();
        try {
            //接收 发送请求返回对象
            HttpResponse response = client.execute(request);
            //拿结果
            HttpEntity entity = response.getEntity();
            if (entity != null) {
                //类型转换
                String result = EntityUtils.toString(entity, "UTF-8");
                //转为json格式
                return result;
            }
        } catch (IOException e) {
            log.error(e.getMessage());
        } finally {
            //连接释放
            request.releaseConnection();
        }
        return null;
    }

    /**
     * 发送post请求
     *
     * @param url        路径
     * @param jsonObject 参数(json类型)
     * @return
     * @throws IOException
     */
    public static String httpPostJson(String url, JSONObject jsonObject) throws ParseException, IOException {
        String body = "";

        //创建httpclient对象
        CloseableHttpClient client = HttpClients.createDefault();
        //创建post方式请求对象
        HttpPost httpPost = new HttpPost(url);

        //装填参数
        StringEntity s = new StringEntity(jsonObject.toString(), "UTF-8");
        s.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE,
                "application/json"));
        //设置参数到请求对象中
        httpPost.setEntity(s);
        System.out.println("请求地址：" + url);
//        System.out.println("请求参数："+nvps.toString());

        //设置header信息
        //指定报文头【Content-type】、【User-Agent】
//        httpPost.setHeader("Content-type", "application/x-www-form-urlencoded");
        httpPost.setHeader("Content-type", "application/json");
        httpPost.setHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");

        //执行请求操作，并拿到结果（同步阻塞）
        CloseableHttpResponse response = client.execute(httpPost);
        //获取结果实体
        HttpEntity entity = response.getEntity();
        if (entity != null) {
            //按指定编码转换结果实体为String类型
            body = EntityUtils.toString(entity, "UTF-8");
        }
        EntityUtils.consume(entity);
        //释放链接
        response.close();
        return body;
    }
}
